JP3125731B2 - clock - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a timepiece for adjusting the period of a generator driven by a rotary power source to the standard period of a standard signal source.

[0002]

2. Description of the Related Art FIG. 1 shows a speed control device for a timepiece using a mainspring as a power source. Reference numeral 1 denotes a rotary power source containing a mainspring. Reference numeral 2 denotes a wheel train for increasing the speed, and reference numeral 3 denotes an escape wheel & pinion which rotates in synchronization with the wheel train. Reference numeral 4 denotes an ankle linked to an escape wheel & pinion. Reference numeral 5 denotes a balance spring, and reference numeral 6 denotes a ten axis of an inertia which shares a central axis with the balance spring. In this mechanism, the rotating shaft is controlled by rotating the balance shaft and the balance spring as peripheral oscillators to feed the teeth of the escape wheel through the ankle. Meanwhile, the power of the vibrator is also transmitted from the power spring through the escape wheel.

[0003] The above is a known governing device, which is applied to a timepiece from a wristwatch to a clock, and is known as a relatively precise governing device.

[0004]

Such a conventional device has the following disadvantages. In other words, the accuracy of the governing cycle is Q
Depending on the value, temperature characteristics, etc., the level drops greatly compared to the precision of a quartz clock using a quartz oscillator or the like as a time standard source. Further, it is not suitable for a power unit that requires mechanical pulse control and requires smooth continuous movement.

The present invention eliminates the above-mentioned drawbacks and adjusts the rotational power by precise and continuous motion, and has the following features.

(1) When a crystal oscillator is applied as a standard signal source, it is possible to control the speed with the same accuracy as a quartz watch.

(2) The speed control of the continuous rotary motion can be arbitrarily set by a circuit constant, and can be used instead of a conventional electric motor.

[0008]

A timepiece according to the present invention comprises a rotary power source device, a generator driven by the rotary power source device, a standard periodic signal output device, a periodic signal of the generator and the standard signal. A comparison circuit that compares a standard periodic signal of the periodic signal output device; a resistive load connected to an output terminal of the generator; and a comparison circuit that adjusts a cycle of the periodic signal to a cycle of the standard periodic signal. Switch means for changing the resistance load into a plurality of stages in accordance with the result of the circuit comparison.

[0009]

FIG. 2 shows a configuration example of the present invention.

FIG. 3 shows a block diagram of the rotational power control circuit of the present invention.

FIG. 4 is a detailed circuit diagram of the logical comparison circuit in FIG.

In FIG. 2, reference numeral 7 denotes a rotary power source having a built-in mainspring similar to 1 in FIG. Reference numeral 8 denotes a speed-up gear train corresponding to 2. 9 is a gear having magnetic poles. In this configuration, 10 is a donut-shaped permanent magnet and is magnetized in the vertical direction of the circular surface. Each surface is in contact with 11 and 12 high-permeability gears. 11 and 12 have the same shape, and each tooth is opposed. Reference numeral 13 denotes a solenoid coil inserted between 11 and 12. A control circuit 14 connects both ends of the solenoid coil. The present invention is configured to regulate the rotational power composed of 9 to 12 through 13 solenoid coils by 14 circuits. The rotation of 9 is performed with a torque increased from 7. In this case, since a magnet is used, it is necessary to make the layout of the gears 7 and 8 from the material having a small magnetic susceptibility and magnetic permeability including the peripheral structure, and to make the layout of the gears 9 to 12 with little magnetic influence. FIG. 3 shows an example of the control circuit 14, and reference numeral 17 denotes a crystal oscillator serving as a cycle standard. Reference numeral 18 denotes a frequency divider that divides a high-frequency crystal oscillation signal into an appropriate cycle. Reference numeral 20 denotes a connection of a 1/2 frequency divider. Reference numeral 15 denotes both terminals of the solenoid coil 13 shown in FIG. 16 is a frequency divider. 19 is 2 like 20
This is the connection of the 1/1 frequency divider. Reference numeral 21 denotes a connection of a logic signal comparison circuit which is shown in detail in FIG. 22 is an electronic switch. This turns on and off according to the level of the final logic signal of the 21 comparison circuits. 23 and 24 are resistors, respectively.
The function of this circuit is to control the 18 output standard period signals and the 16 output signals so that the cumulative periods of the 19 and 20 frequency dividers are made equal. In short, when the cycle of 16 is cumulatively shorter than the cycle of 18, the switch of 22 is turned on and the resistance at both ends of the solenoid coil is reduced. This increases power heat consumption and slows down. In the opposite case, the switch 22 is turned off, the power consumption is reduced, and the degree of deceleration is reduced. A stable cycle can be obtained by appropriately setting the torque width of the mainspring, the resistance values of 24 and 23, and the constant of the generator using the solenoid coil. These constants can be set arbitrarily in design.

FIG. 4 shows an example of the comparison circuit. This circuit is shown in FIG.
Corresponds to one of the 21 connection columns. Sn at 25 is a signal of the 19 frequency divider. 26 is a signal of the 20 frequency divider. The signals of Sn, Cn and An correspond in FIGS. 3 and 4. In FIG. 4, 27, 28, 31, and 32 are inverter circuits, and 35 is an OR circuit. 29, 30, 33, 3
4 is an AND circuit. FIG. 5 shows the relationship between the state of Sn and Cn and the logical signal of An with respect to the logical signal of An-1. A0
= 0 activates the circuit of FIG. At this time, Sn and Cn are reset and start in a state of all zeros. When the switch 22 in FIG. 3 is turned OFF at 0 and turned ON at 1 at 1, the coil 13 in FIG. 2 starts in a series state of its internal resistance and the resistance r1 of 23 in FIG. However, when the rotation speed increases,
When the number of 19 counters consisting of divider rows becomes larger than the number of 20 counters, 22 switches are turned on and 2
The increase in power consumption due to the r2 resistance of FIG.
The brake is applied to the 12 gears to adjust the speed. The speed control state is maintained by appropriately setting the respective design constants.

[0014]

According to the present invention, since the clock circuit is driven by the power generated by the power generator such as a mainspring, a pollution-free timepiece having no chemical battery can be provided. Moreover, since a crystal oscillator can be used as the standard periodic signal, a highly accurate timepiece can be provided. In particular, according to the present invention, the resistance load connected to the output terminal of the generator is switched to a plurality of stages by the switch means in accordance with the comparison result of the comparison circuit that compares the cycle of the generator periodic signal with the cycle of the standard periodic signal. Since the speed is adjusted by changing the speed, even if the rotation speed of the generator is slightly changed, fine control can be performed by appropriately changing the resistance load in a plurality of stages. It is possible to adjust the speed, resulting in a highly accurate timepiece.

The present invention can be applied to high precision watches and clocks. In addition, as the power source, the mainspring,
It is an invention that has a wide application range such as atmospheric pressure change, can obtain a clean watch, and becomes increasingly important toward an era where environmental conservation is important.

[Brief description of the drawings]

FIG. 1 is a diagram showing a conventional time governor for a timepiece.

FIG. 2 is a block diagram of a configuration example of the present invention.

FIG. 3 is a block diagram of a control circuit according to an example of the present invention.

FIG. 4 is a logic comparison circuit diagram of a control circuit according to an example of the present invention.

FIG. 5 is a diagram showing a logic signal state in FIG. 4;

[Explanation of symbols]

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G04C 10/00 G04B 17/00

Claims (1)

(57) [Claims] 1. A rotary power source device, a generator driven by the rotary power source device, a standard periodic signal output device, and a periodic signal of the generator and a standard periodic signal of the standard periodic signal output device. A comparing circuit to be compared, a resistive load connected to an output terminal of the generator, and the resistive load according to a comparison result of the comparing circuit so as to adjust a cycle of the periodic signal to a cycle of the standard periodic signal. A switch means for changing the number of steps into a plurality of stages.